CoreSite, RiverMeadow Software and Violin Memory Form Strategic Channel and Product Alliance

New Relationship Delivers High-Performance Cloud Migration, Disaster Recovery, and Storage Solutions to Carriers and Cloud Service Providers

DENVER, CO – September 20, 2012 – CoreSite Realty Corporation (NYSE: COR), a national provider of powerful, network-rich data centers, today announced that it has formed a strategic channel and product alliance with RiverMeadow Software and Violin Memory Inc. RiverMeadow's flagship product, enCloud™, is an automated cloud onboarding solution built specifically for carrier and cloud service provider IaaS platforms. Violin Memory is considered the leading provider of fast and scalable flash memory arrays.

By colocating within CoreSite's network-centric, high-performance data centers with Violin Memory's scalability and capacity for high I/O rates and RiverMeadow's enCloud SaaS-based solution, over 275 carriers and cloud service providers within the CoreSite ecosystem can seamlessly access and deliver high-performance cloud onboarding, disaster recovery, and storage services over their IaaS platforms at a competitive price.

The enCloud software runs an open standard data-collection process that results in the creation of a disk image of the server being migrated, whether physically or virtually. That disk image is automatically converted and can be deployed into most commercially-available target cloud stacks including VMWare's vCloud™. The disk image is saved using a storage device such as Violin's flash memory array and can be recovered in the event of a disaster. Because this innovative solution is deployed using CoreSite's network-centric computing platform, the enCloud software and the Violin appliance are directly accessible to all carrier and cloud service providers across CoreSite's North American data center platform.

"This strategic channel and product alliance creates value for both cloud and network service providers as well as their enterprise customers across CoreSite's platform," said Jarrett Appleby, COO at CoreSite. "Our customers in the carrier and cloud service provider ecosystems now have immediate access to value-add, revenue-generating cloud-migration and flash-storage solutions, enabling our customers to deliver best-of-breed cloud services to the market."

"Porting and tuning the enCloud software to run natively on the Violin Memory appliance can reduce server migration times by as much as 80% compared to those conducted over typical runtime environments," said Mark Shirman, CEO of RiverMeadow Software. "It's a compelling combination of connectivity, performance and capability that gives carriers and cloud service providers three core IaaS platform services that can be offered to end-user clients."

"This strategic channel and product alliance creates value for both cloud and network service providers as well as their enterprise customers across CoreSite's platform," said Jarrett Appleby, COO at CoreSite. "Our customers in the carrier and cloud service provider ecosystems now have immediate access to value-add, revenue-generating cloud-migration and flash-storage solutions, enabling our customers to deliver best-of-breed cloud services to the market."

"We've leveled the playing field and raised the performance bar, providing customers across CoreSite's North American data center platform with a distinct competitive advantage," said Don Basile, CEO of Violin Memory. "The Violin Flash Memory Array technology has been shown to be four times faster than solid state disk storage I/O solutions and delivers a higher level of service, availability, and performance at an optimal price point."

The combined solution is available immediately to vCloud-enabled IaaS partners and will be available to CloudStack and OpenStack providers in Q3, 2012.

For further information on CoreSite, visit www.CoreSite.com or call 303-405-1000. Learn more about RiverMeadow at www.RiverMeadow.com or call 978-467-4090. Visit www.violin-memory.com or call 650-396-1500 for additional information on Violin Memory.

About CoreSite

CoreSite Realty Corporation (NYSE: COR) is a national provider of data center products and interconnection services. More than 750 customers such as Global 1000 enterprises, communications providers, cloud and content companies, financial firms, media and entertainment, healthcare, and government agencies choose CoreSite for the confidence that comes with customer-focused data center products, service and support systems, and scalability. CoreSite's network-centric computing platform is a business catalyst, featuring the Any2 Internet exchange and network ecosystems, which include access to 225+ carriers and service providers and a growing mesh of more than 15,000 interconnections. The company features a diverse colocation offering from individual cabinets to custom cages and private suites, with 14 data center locations in nine major U.S. markets. For more information, visit www.CoreSite.com.

CoreSite Media Contact
Jeannie Zaemes | CoreSite Marketing Senior Director
+1 720.446.2006 | +1 866.777.CORE
Jeannie.Zaemes@CoreSite.com

About RiverMeadow Software

RiverMeadow Software Inc., with offices in Westford, MA and San Jose, CA, develops industry-leading software that automates the migration of physical and virtual servers (live and as-is) into and between public, private and hybrid clouds. Our enCloudTM software is a rapid onboarding SaaS based solution developed specifically for Cloud Service Provider IaaS platforms. Without agents or downtime the enCloud software dramatically reduces the cost and complexity of cloud migration, enabling Service Providers to quickly, easily and cost-efficiently deliver the benefits of elastic cloud computing to enterprise and SMB customers.

RiverMeadow and enCloud are trademarks or registered trademarks of RiverMeadow Software. All other trademarks are the property of their respective owners. For further information visit: www.rivermeadow.com.

RiverMeadow Media Contact
Scott Colgan | Vice President of Marketing
978.467.4090
pr@rivermeadow.com

About Violin Memory, Inc.

Violin Memory is pioneering a new class of high-performance flash-based storage systems that are designed to bring storage performance in-line with high-speed applications, servers and networks. Violin Memory Arrays are specifically designed at each level of the system architecture starting with memory and optimized through the array to leverage the inherent capabilities of flash memory and meet the sustained high-performance requirements of business-critical applications, virtualized environments and Big Data solutions in enterprise data centers. Designed for sustained performance with high reliability, Violin Flash Memory Arrays can scale to hundreds of terabytes and millions of IOPS with low, spike-free latency. Founded in 2005, Violin Memory is headquartered in Mountain View, California. For more information, visit www.violin-memory.com.

Violin Memory Media Contact
Eastwick Communications
Suzanne Chan
415.820.4165
violin@eastwick.com

Forward Looking Statements

This earnings release and accompanying supplemental information may contain forward-looking statements within the meaning of the federal securities laws. Forward-looking statements relate to expectations, beliefs, projections, future plans and strategies, anticipated events or trends and similar expressions concerning matters that are not historical facts. In some cases, you can identify forward-looking statements by the use of forward-looking terminology such as "believes," "expects," "may," "will," "should," "seeks," "approximately," "intends," "plans," "pro forma," "estimates" or "anticipates" or the negative of these words and phrases or similar words or phrases that are predictions of or indicate future events or trends and that do not relate solely to historical matters. Forward-looking statements involve known and unknown risks, uncertainties, assumptions and contingencies, many of which are beyond CoreSite's control, that may cause actual results to differ significantly from those expressed in any forward-looking statement. These risks include, without limitation: the geographic concentration of CoreSite's data centers in certain markets and any adverse developments in local economic conditions or the demand for data center space in these markets; fluctuations in interest rates and increased operating costs; difficulties in identifying properties to acquire and completing acquisitions; significant industry competition; CoreSite's failure to obtain necessary outside financing; CoreSite's failure to qualify or maintain our status as a REIT; financial market fluctuations; changes in real estate and zoning laws and increases in real property tax rates; and other factors affecting the real estate industry generally. All forward-looking statements reflect CoreSite's good faith beliefs, assumptions and expectations, but they are not guarantees of future performance. Furthermore, CoreSite disclaims any obligation to publicly update or revise any forward-looking statement to reflect changes in underlying assumptions or factors, of new information, data or methods, future events or other changes. For a further discussion of these and other factors that could cause CoreSite's future results to differ materially from any forward-looking statements, see the section entitled "Risk Factors" in CoreSite's most recent annual report on Form 10-K, and other risks described in documents subsequently filed by CoreSite from time to time with the Securities and Exchange Commission.